Revert "Minor optimization"

This reverts commit ff6bd272f581c2289b2047635d900301a896dd01.
Adds missing Zend exception class
Fixes $this vs. self:: in static method
Updates to latest Arcavias Core
Adapts backend part to enable a localized admin interface based on the user settings
Adapts catalog filter to new Arcavias Core

- Adds catalog count html client
- Removes catalog search filter which is replaced by a configurable catalog filter
- Improves descriptions and translations
Updates to latest Arcavias Core
Merge pull request #134 from nsendetzky/master

Adapts TYPO3 extension to latest Arcavias Core